Leinster lock Ryan Baird has been rewarded for his outstanding display against Glasgow last Friday with a call-up to the Ireland squad.
The 20-year old was included in the original Six Nations squad as a development player before being released back to his province.
Baird, a product of St Michael's College, scored a brilliant hat-trick in Leinster's win over Glasgow last week as he showcased his superb athletic ability.
The powerful lock, who played for the Ireland U-20s last year, will train with Ireland in the early part of the week as he furthers his experience with the senior squad.
Ultan Dillane and Dave Heffernan will rejoin the squad as soon as they land back from South Africa after helping Connacht to an important PRO14 win over the Kings yesterday.
A group of 35 players will train this week despite this weekend's game against Italy being postponed.
Instead, Andy Farrell's men will begin preparations for their next Six Nations clash which is due to take place against France in a fortnight.
However, World Rugby are due to meet in Paris today and discuss whether or not the remainder of the tournament will go ahead, as well as pencilling in potential rescheduled dates.
Bundee Aki (Galwegians/Connacht) 26 caps
Billy Burns (Ulster) 0 caps
Ross Byrne (UCD/Leinster) 6 caps
Andrew Conway (Garryowen/Munster) 21 caps
John Cooney (Terenure College/Ulster) 11 caps
Keith Earls (Young Munster/Munster) 84 caps
Chris Farrell (Young Munster/Munster) 9 caps
Robbie Henshaw (Buccaneers/Leinster) 43 caps
Dave Kearney (Lansdowne/Leinster) 19 caps
Jordan Larmour (St Mary’s College/Leinster) 24 caps
Stuart McCloskey (Bangor/Ulster) 3 caps
Luke McGrath (UCD/Leinster) 19 caps
Conor Murray (Garryowen/Munster) 81 caps
Jonathan Sexton (St Marys College/Leinster) 91 caps
Jacob Stockdale (Lurgan/Ulster) 28 caps
Ryan Baird (Dublin University/Leinster) 0 caps
Will Connors (UCD/Leinster) 0 caps
Max Deegan (Lansdowne/Leinster) 1 cap
Ultan Dillane (Corinthians/Connacht) 15 caps
Caelan Doris (St Mary’s College/Leinster) 2 caps
Tadhg Furlong (Clontarf/Leinster) 44 caps
Dave Heffernan (Buccaneers/Connacht) 1 cap
Iain Henderson (Academy/Ulster) 55 caps
Rob Herring (Ballynahinch/Ulster) 11 caps
Ronan Kelleher (Lansdowne/Leinster) 3 caps
Dave Kilcoyne (UL Bohemians/Munster) 39 caps
Jack McGrath (St Mary’s College/Ulster) 56 caps
Jack O’Donoghue (UL Bohemians/Munster) 2 caps
Peter O’Mahony (Cork Constitution/Munster) 67 caps
Tom O’Toole (Banbridge/Ulster) 0 caps
Andrew Porter (UCD/Leinster) 26 caps
James Ryan (UCD/Leinster) 26 caps
CJ Stander (Shannon/Munster) 41 caps
Devin Toner (Lansdowne/Leinster) 70 caps
Josh van der Flier (UCD/Leinster) 26 caps